#include<stdio.h>
#include<pthread.h>

void * thr_fn1(void *arg)
{
    printf("thread 1 returning\n");
    return ((void *)1);
}

void * thr_fn2(void *arg)
{
    printf("thread 2 exiting\n");
    pthread_exit((void *)2);
}

int main()
{
    int err;
    pthread_t tid1, tid2;
    void * tret;

    err = pthread_create(&tid1, NULL, thr_fn1, NULL);
    if(err != 0)
        printf("can't create thread_1");
    
    err = pthread_create(&tid2, NULL, thr_fn2, NULL);

    if(err != 0)
        printf("can't create thread 2");

    err = pthread_join(tid1, &tret);
    if(err != 0)
        printf("can't join with thread 1");
 
    printf("thread 1 exit code %ld\n", (long)tret);
    err = pthread_join(tid2, &tret);

    if(err != 0)
        printf("can't join with thread 2");

    printf("thread 2 exit code %ld\n", (long)tret);
    return 0;
}
